<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>jQuery UI Slider - Slider scrollbar</title>
<link rel="stylesheet" href="../../themes/base/jquery.ui.all.css">
<script src="../../jquery-1.7.2.js"></script>
<script src="../../ui/jquery.ui.core.js"></script>
<script src="../../ui/jquery.ui.widget.js"></script>
<script src="../../ui/jquery.ui.mouse.js"></script>
<script src="../../ui/jquery.ui.slider.js"></script>
<link rel="stylesheet" href="../demos.css">
<style>
#demo-frame>div.demo {
	padding: 10px !important;
}

.scroll-pane {
	overflow: auto;
	width: 99%;
	float: left;
}

.scroll-content {
	width: 2440px;
	float: left;
}

.scroll-content-item {
	width: 100px;
	height: 100px;
	float: left;
	margin: 10px;
	font-size: 3em;
	line-height: 96px;
	text-align: center;
}

* html .scroll-content-item {
	display: inline;
} /* IE6 float double margin bug */
.scroll-bar-wrap {
	clear: left;
	padding: 0 4px 0 2px;
	margin: 0 -1px -1px -1px;
}

.scroll-bar-wrap .ui-slider {
	background: none;
	border: 0;
	height: 2em;
	margin: 0 auto;
}

.scroll-bar-wrap .ui-handle-helper-parent {
	position: relative;
	width: 100%;
	height: 100%;
	margin: 0 auto;
}

.scroll-bar-wrap .ui-slider-handle {
	top: .2em;
	height: 1.5em;
}

.scroll-bar-wrap .ui-slider-handle .ui-icon {
	margin: -8px auto 0;
	position: relative;
	top: 50%;
}
</style>
<script>
	$(function() {
		//scrollpane parts
		var scrollPane = $( ".scroll-pane" ),
			scrollContent = $( ".scroll-content" );
		
		//build slider
		var scrollbar = $( ".scroll-bar" ).slider({
			slide: function( event, ui ) {
				if ( scrollContent.width() > scrollPane.width() ) {
					scrollContent.css( "margin-left", Math.round(
						ui.value / 100 * ( scrollPane.width() - scrollContent.width() )
					) + "px" );
				} else {
					scrollContent.css( "margin-left", 0 );
				}
			}
		});
		
		//append icon to handle
		var handleHelper = scrollbar.find( ".ui-slider-handle" )
		.mousedown(function() {
			scrollbar.width( handleHelper.width() );
		})
		.mouseup(function() {
			scrollbar.width( "100%" );
		})
		.append( "<span class='ui-icon ui-icon-grip-dotted-vertical'></span>" )
		.wrap( "<div class='ui-handle-helper-parent'></div>" ).parent();
		
		//change overflow to hidden now that slider handles the scrolling
		scrollPane.css( "overflow", "hidden" );
		
		//size scrollbar and handle proportionally to scroll distance
		function sizeScrollbar() {
			var remainder = scrollContent.width() - scrollPane.width();
			var proportion = remainder / scrollContent.width();
			var handleSize = scrollPane.width() - ( proportion * scrollPane.width() );
			scrollbar.find( ".ui-slider-handle" ).css({
				width: handleSize,
				"margin-left": -handleSize / 2
			});
			handleHelper.width( "" ).width( scrollbar.width() - handleSize );
		}
		
		//reset slider value based on scroll content position
		function resetValue() {
			var remainder = scrollPane.width() - scrollContent.width();
			var leftVal = scrollContent.css( "margin-left" ) === "auto" ? 0 :
				parseInt( scrollContent.css( "margin-left" ) );
			var percentage = Math.round( leftVal / remainder * 100 );
			scrollbar.slider( "value", percentage );
		}
		
		//if the slider is 100% and window gets larger, reveal content
		function reflowContent() {
				var showing = scrollContent.width() + parseInt( scrollContent.css( "margin-left" ), 10 );
				var gap = scrollPane.width() - showing;
				if ( gap > 0 ) {
					scrollContent.css( "margin-left", parseInt( scrollContent.css( "margin-left" ), 10 ) + gap );
				}
		}
		
		//change handle position on window resize
		$( window ).resize(function() {
			resetValue();
			sizeScrollbar();
			reflowContent();
		});
		//init scrollbar size
		setTimeout( sizeScrollbar, 10 );//safari wants a timeout
	});
	</script>
</head>
<body>

	<div class="demo">

		<div class="scroll-pane ui-widget ui-widget-header ui-corner-all">
			<div class="scroll-content">
				<div class="scroll-content-item ui-widget-header">1</div>
				<div class="scroll-content-item ui-widget-header">2</div>
				<div class="scroll-content-item ui-widget-header">3</div>
				<div class="scroll-content-item ui-widget-header">4</div>
				<div class="scroll-content-item ui-widget-header">5</div>
				<div class="scroll-content-item ui-widget-header">6</div>
				<div class="scroll-content-item ui-widget-header">7</div>
				<div class="scroll-content-item ui-widget-header">8</div>
				<div class="scroll-content-item ui-widget-header">9</div>
				<div class="scroll-content-item ui-widget-header">10</div>
				<div class="scroll-content-item ui-widget-header">11</div>
				<div class="scroll-content-item ui-widget-header">12</div>
				<div class="scroll-content-item ui-widget-header">13</div>
				<div class="scroll-content-item ui-widget-header">14</div>
				<div class="scroll-content-item ui-widget-header">15</div>
				<div class="scroll-content-item ui-widget-header">16</div>
				<div class="scroll-content-item ui-widget-header">17</div>
				<div class="scroll-content-item ui-widget-header">18</div>
				<div class="scroll-content-item ui-widget-header">19</div>
				<div class="scroll-content-item ui-widget-header">20</div>
			</div>
			<div class="scroll-bar-wrap ui-widget-content ui-corner-bottom">
				<div class="scroll-bar"></div>
			</div>
		</div>

	</div>
	<!-- End demo -->



	<div class="demo-description">
		<p>Use a slider to manipulate the positioning of content on the
			page. In this case, it acts as a scrollbar with the potential to
			capture values if needed.</p>
	</div>
	<!-- End demo-description -->

</body>
</html>
